Blink Camera motion detection not working

I have recently installed the blink camera component with a Blink xt2 camera. I have used the default configuration

# Example configuration.yaml entry
blink:
  username: YOUR_USERNAME
  password: YOUR_PASSWORD

The component appears to work and has created the correct components . However once the camera has detected motion the binary sensor will not reset back to off , until HA is re-started. When re-started the binary sensor will be off until motion is detected and then once motion detected will be stuck on forever (until HA is restarted)

I cannot find any errors , does this component work ? I have tried to force a sync via the android software and by issuing BLINK.BLINK_UPDATE service call. but the sensor will not turn back to off

What am I missing ?

edit just discovered existing bug https://github.com/fronzbot/blinkpy/issues/211